jhernandez5167
jhernandez5167
02-02-2015
Mathematics
contestada
solve for x
log(x–4)+log(x+3)=2logx
Respuesta :
konrad509
konrad509
02-02-2015
[tex]D:x-4>0 \wedge x+3>0 \wedge x>0\\ D:x>4 \wedge x>-3 \wedge x>0\\ D:x>4\\\\ \log(x-4)+\log(x+3)=2\log x\\ \log(x-4)(x+3)=\log x^2\\ (x-4)(x+3)=x^2\\ x^2+3x-4x-12=x^2\\ -x=12\\ x=-12\\ -12\not\in D\\ \Downarrow\\ \boxed{x\in\emptyset}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 86+ )
Otras preguntas
Find all the critical points of the function [tex] f(x)= (x+1)/(x-3) [/tex] and determine the intervals in which the function is increasing and in which it is d
Suppose you manage a corner grocery store. if peanut butter is an inferior good, what do you suppose would happen to the price and quantity sold of peanut butte
A person who is practicing progressive training needs to use in the training
What groups of people moved into the midwest region from 1800 to 1880?
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. during the first part, she rides for 22 min
Kenneth completed 0.65 of the total number of sit-ups his coach required .what fraction best represents this amount?
Store has sold 90 notebooks which is 20% of all the notebooks they had how many notebooks they had how many notebooks did the store have at first
$15.00 divided by 1/9 Pls help
On a velocity time graph, the slope tells you the ______ of the object. the time to travel the acceleration the speed the distance travelled
Give the nuclear symbol for the isotope of silicon (z=14) for which a=29?
